Plug



FIG. 1 is an end perspective view of a plug showing my new design;

FIG. 2 is a side elevational view;

FIG. 3 is a plan view of the end not seen in FIG. 1;

FIG. 4 is a sectional view taken along the line 4--4 of FIG. 3; and

FIG. 5 is a sectional view taken along the line 5--5 of FIG. 3. 

The ornamental design for a plug, as shown. 